An externally excited electric synchronous machine may include a machine rotor, a machine stator, and a signal transmission device for contactless transmission of an operating signal corresponding to a DC voltage to the machine stator. The machine rotor may include a rotor shaft and a machine rotor coil. The machine rotor coil may be supplied with DC voltage and may provide a magnetic rotor field. The machine stator may include a machine stator coil that is fixed relative to the machine stator. The machine stator coil may provide a magnetic stator field, which may interact with the magnetic rotor field such that the machine rotor rotates. The signal transmission device may include (i) on the machine rotor, a signal coil connected in series with the machine rotor coil and (ii) on the machine stator, a magnetic field sensor that detects a magnetic field provided via the signal coil.

An externally excited electric synchronous machine may include a machine rotor, a machine stator, and a signal transmission device for contactless transmission of an operating signal corresponding to a DC voltage to the machine stator. The machine rotor may include a rotor shaft and a machine rotor coil. The machine rotor coil may be supplied with DC voltage and may provide a magnetic rotor field. The machine stator may include a machine stator coil that is fixed relative to the machine stator. The machine stator coil may provide a magnetic stator field, which may interact with the magnetic rotor field such that the machine rotor rotates. The signal transmission device may include (i) on the machine rotor, a signal coil connected in series with the machine rotor coil and (ii) on the machine stator, a magnetic field sensor that detects a magnetic field provided via the signal coil.

An electrically excited machine that includes a machine rotor and an exciter device for the electrical excitation of the electrically excited machine. The exciter device can include at least one energy transfer system integrated in and/or arranged inside the machine rotor. The machine rotor can include a rotor winding. The electrically excited machine can also include a machine stator. The machine stator can be arranged outside of the electrically excited machine.

An inductively electrically excited synchronous machine is disclosed. The synchronous machine includes a rotor including at least one rotor coil for generating a magnetic rotor field, a stator, on which the rotor is rotatably mounted about an axis of rotation, and including at least one stator coil for generating a magnetic stator field, and a rotary transformer for inductively transmitting electrical energy to the at least one rotor coil. The rotary transforming includes at least one stator-fixed transformer primary coil and at least one rotor-fixed transformer secondary coil. A machine controller is coupled to the stator coil and to the at transformer primary coil for operation as a motor and/or as a generator. A demagnetizing circuit is provided that includes at least one dynamo winding arranged on the stator. The demagnetizing circuit has at least one switching device for activating and deactivating the demagnetizing circuit.

An inductively electrically excited synchronous machine is disclosed. The synchronous machine includes a rotor including at least one rotor coil for generating a magnetic rotor field, a stator, on which the rotor is rotatably mounted about an axis of rotation, and including at least one stator coil for generating a magnetic stator field, and a rotary transformer for inductively transmitting electrical energy to the at least one rotor coil. The rotary transforming includes at least one stator-fixed transformer primary coil and at least one rotor-fixed transformer secondary coil. A machine controller is coupled to the stator coil and to the at transformer primary coil for operation as a motor and/or as a generator. A demagnetizing circuit is provided that includes at least one dynamo winding arranged on the stator. The demagnetizing circuit has at least one switching device for activating and deactivating the demagnetizing circuit.

A two phase wind power generator system for producing an electrical output having twice the voltage relative to single phase systems includes a shaft connected to an external shaft rotator, a generator aspect integral with the shaft and an output aspect connected to the generator aspect. The generator aspect includes a power source, switching commutator with integrated brushes, first rotor assembly, first stator assembly, second rotor assembly, and a second stator assembly, with the switching commutator, the first rotor assembly and second rotor assembly discretely mounted to shaft, with the rotor assemblies oriented 180 degrees out of phase. The power source energizes the rotor assemblies, and when the shaft is rotated by an external force, electricity is induced in the stator assemblies. The output aspect is operative to receive electricity induced thereby and convert it to a desired form of electrical current as well as combine it for output.

A permanent magnet alternator (PMA) includes a rotatable shaft, windings, a shunt regulator circuit, and a speed detection circuit. The rotatable shaft is connected electromagnetically to the windings. The shunt regulator circuit is electrically connected to the windings. A current sense transformer with a primary coil is electrically connected to the shunt regulator circuit. A secondary coil is electrically connected to a comparator circuit with reference voltage and generates voltage pulse indicating PMA speed. The voltage pulses form an output corresponding to and indicative of rotation speed of the shaft suitable for processing by a processor to present a PMA speed indication for use in the overall system architecture as a measurement parameter.

In a controller-integrated electric rotating machine configured to assemble a front side semi-manufactured assembly E formed from an electric rotating machine main body 1 and a front bracket 4 with the rear side semi-manufactured assembly D to which a rear bracket 5, a control unit assembly A, a power unit assembly B, and a brush unit assembly C are integrated, a series of brush restricting pin insertion holes 24 are disposed from a rear side end surface of the control unit assembly through the brush, and therefore assembling workability is improved without failures in assembling work which occur due to breaking away of a brush from a brush holder to the rotary shaft side.

An object of the present invention is to provide a rotary electric machine for vehicle which can improve workability and efficiently secure an attachment space at low cost. In a rotary electric machine according to the present invention, a terminal 34 is attached on the outside of a rear bracket 21 so as to be overlapped and fitted to a voltage adjustment device 22 in an axial direction. Fitting portions 22j and 22k made of conductors are provided on the voltage adjustment device 22. Portions 34m and 34p to be fitted, which are made of conductors, are provided on the terminal 34. The voltage adjustment device 22 and the terminal 34 are integrally fixed to the rear bracket 21, with the fitting portions being fitted into the portions to be fitted.

A two phase wind power generator system for producing an electrical output having twice the voltage relative to single phase systems includes a shaft connected to an external shaft rotator, a generator aspect integral with the shaft and an output aspect connected to the generator aspect. The generator aspect includes a power source, switching commutator with integrated brushes, first rotor assembly, first stator assembly, second rotor assembly, and a second stator assembly, with the switching commutator, the first rotor assembly and second rotor assembly discretely mounted to shaft, with the rotor assemblies oriented 180 degrees out of phase. The power source energizes the rotor assemblies, and when the shaft is rotated by an external force, electricity is induced in the stator assemblies. The output aspect is operative to receive electricity induced thereby and convert it to a desired form of electrical current as well as combine it for output.